on this wednesday night, to the streets. massive crowds on the move in baltimore again. police at the ready with another night of mandatory curfew ahead as major league ball players are forced to play to an empty stadium. sck waves on everest. we reach base camp. tonight, what happened when the mountain started shaking and where the search for the missing stands. >> a drone comes dangerously close to a commercial plane coming in for landing. a police hunt in the air to find it and whoever was at the controls. and tracking your every move. a consumer alert for tens of millions of smartphone users. something you may not

know about the apple or android device that never leaves your side. nightly news begins right now. >> announcer: from nbc news world head quarters in new york, this is "nbc nightly news." reporting tonight, lester holt. >> good evening in baltimore at this hour. protestors on the move again. police keeping a very close eye on marchers in the street as they prepare to enforce another night of mandatory curfew there. we have been watching as a growing crowd of peaceful marchers have made their way to baltimore's train station, then onto city hall with a large police presence awaiting them. they're demanding accountability for the death of freddie gray who suffers fatal injuries while in police custody. nbc's ron allen is in the crowd. >> reporter: we're in the middle of a huge crowd of young people who have been marching in the heart of baltimore. they're heading in that direction to city hall. this is one of several marches going on all

day in support of freddie gray's family demanding justice. you hear the chant we heard so loudly in ferguson missouri. no justice, no peace. so on and so forth. can i ask you, why are you out here? >> because we freedom. they need to stop killing young black men and women. we need to be out here every day purchasing them to make sure they do it. and the police can't investigate themselves. >> reporter: this is about more than freddie gray? >> this is about more than freddie gray. this is about educational, social, environmental decadence that has plagued this city for eons. >> reporter: mostly young people. look like university-aged people. some are from baltimore, some from out of town. they're marching and you hear their demands. they're not satisfied. they don't believe that the justice system is going to work for them. they're out here. they're going to stay out here until they see justice. back to you, lester. >> all right. ron allen with the

marchers. let's go to peter alexander now. he's at city hall in baltimore where the national guard is out in force. peter? >> reporter: good evening. you can see that strong show of force right now. state and local police as well as members of the national kbard here. this is the most law enforcement we've seen at this site all week. they've been anticipating these loud demonstrations and finally they've arrived. the demonstrations resumed today. hundreds marching through the streets of west baltimore peacefully. >> people are picking up bags and brooms and cleaning up. parents are keeping kids at home and off the streets and community leaders have been urging people to head home before the curfew. >> reporter: at camden yards, the best seat in the house was on the outside looking in. fans forced to watch through the gates. in a sport that celebrates statistics a whole new category. games unattended by fans. >> 1-1 delivery.

>> reporter: the hits echoed across 46,000 empty seats, this image may echo much farther. life in baltimore is hardly back to normal. these scenes show tensions were already high. then a week of violent protests convinced the team to postpone two games and play today to a closed house. >> it's sad. it's just a baseball game. this part is not tragic. it's the part on the other side of town that's tragic. >> this is a concessions manager at the stadium. >> losing out probably like $350. >> this week? >> yeah. >> we need this game to be played but we need this city to be healed for. >> reporter: not far from the ballpark, customers say it makes little difference to them. most can't afford tickets. >> can you imagine how frustrating it is to stand back and watch people go to the orioles games all the time?

>> reporter: while schools reopened today, police and national guard remained on alert, but were not facing off with pro tets test tors. last night's curfew kept most off the streets. but there were limited confrontations and arrests. today, music replaced the mayhem. baltimore's orchestra with an outdoor concert to help soothe their city. and the curfew here goes back into effect tonight at 10:00. many people in the community were anticipating baltimore police to publicly release its results to the investigation into freddie gray's death this friday. but late today, the department said that that's not going to happen. that they're going to hand their investigation over to the state attorney's office to in their words protect the investigation's integrity. lester? >> peter, police in baltimore are hardly the only department under the microscope after a series of violent encounters has provoked outrage and

anger from coast to coast. a number of police officers and sergeants from around the country have come together tonight for an extraordinary conversation with nbc correspondent kate snow about what it's like to put on the badge and go on patrol day in and day out in a climate of mistrust. >> if you had to use one word right now to describe the relationship between the public and the police force -- >> i would say skeptical. >> i'd say strained. >> strained. >> misunderstood. >> people are looking at us a whole lot closer today than they were before. >> you all see what happens when these incidents get put on television. does it make you reluctant to pull your weapon sometimes? >> no. >> no. >> not at all. >> people have to know that no officer i've talked to over 20 years wakes up in the morning wants to shoot an unarmed black teen or anybody in that matter. our job is as unpredictable as humanity is.

>> they worry about the rush to judgment after a cell phone video comes out. >> they're acting as the judge, jury without having any of the information or letting the investigation take its course. >> are you all in favor of body cameras? >> yes. >> i am. >> because it shows everything. >> and it will show our side of it. >> this is a tricky question to ask. but do you feel judged because of your skin color sometimes? >> no more than anybody else. and actually and i don't know if anybody else wants to comment on that. some officers -- some black officers in our department tell me they have bigger issues going into some of the communities because they're labeled as betrayers. >> he hit the nail on the head. when we go out to the incidents where a male black, female black is the suspect, they've been shot, we take the brunt of that from our -- our own society. you know i've been called everything from traitor, uncle tom. >> what do you do to

diffuse that? >> most times i ignore it. a lot of times i realize it's because they're angry that they're lashing out at me. >> what would you say to the angry voices out there? >> channel your anger. your anger, channel it. channel it for something positive. help us. help us help you. >> nbc's kate snow with important perspective from people doing a tough job. turning overseas to the devastating earthquake in nepal and stunning new images just now surfacing including this security camera video capturing the shocking moment the quake hit. terrified people with nowhere to run as a building collapses in the street. and these photos of a baby boy pulled out of the rubble alive and remarkably uninjured. now four days after the quake, hope is fading that more survivors will be

found, but the certainly continues. the earthquake shook even mt. everest itself triggering a massive avalanche. richard angle became one of the first journalists to reach everest and has our report. >> through the window of a rescue helicopter we finally saw it. >> and that is everest. >> the tallest mountain in the world. and the site of last weekend's deadly avalanche. most died here. >> this is the everest base camp. the avenuealanche came down from here. the snow and rock came crashing down destroying all of this part of the base camp and they are still looking for bodies. >> hundreds of climbers remain in what's left of the long and narrow tent city the storied staging ground for the ascent of everest. climbed because it's there. >> we decided to go up to camp one at 2:00 in the morning. >> dan from olympia,

washington, was leading his group up the mountain. but one man chose to stay behind. american documentary film maker tom taplin. >> we tried to convince him to come with us. >> he says taplin was worried about leaving the safety of base camp. >> everything started shaking. you know the mountain was falling down all around us. we got a radio call from base camp that said base camp had been wiped out and we couldn't find our friend. like an hour later, they found his body. >> he was one of at least 18 killed at base camp. many others were injured. but most survived. thanks in part to the extraordinary efforts of this swiss pilot. bad weather had grounded every other rescue helicopter in the area. rush was on his own, transporting victims to an aid station miles and mountains away. >> how many times did you go back and forth? >> 39, 40 times back and forth. >> he shuttled the

seriously injured to safety all 73 of them. base camp is slowly emptying out. there will be no climbing season this year. >> the mountain doesn't want you to be here you shouldn't be here. you have to respect it. >> most at base camp now want to walk down out of respect for the mountain and those who died here. richard engle, nbc news everest base camp. now alarming moment in the skies over dallas when pilots spotted a flying object coming way too close for comfort and realized it was a drone. all it would take was a collision with an engine or window and a drone could cause a jordy saster in the air. >> it's a danger rowly close call. >> some sort of lighted drone. >> an airbus landing in dallas from new york tuesday night narrowly missing a drone inside controlled air space. >> it was a lighted drone? >> it appeared to be. maybe just a hundred, 200 feet above us.

>> the flight was on the final approach to the runway at love field. 600 feet above the ground. that's when the faa says pilots noticed the drone lit with red and green lights below the plane. they watched as it climbed straight up passing a couple hundred feet above their plane. immediately notifying air traffic control. >> airbus reported a drone passing over the top of them right around your present position. >> dallas police launch add search for the copter. >> if they end up colliding with an airliner it's going to be similar to a bird strike or potentially worse. it can do significant damage to the airplane or an engine. >> it's illegal for drones to fly above 400 feet or within 5 miles of an airport. but that's happening more often and at major hubs like l.a. chicago and atlanta. >> it raises questions about for another pilot seeing such an aircraft what's it going to do. >> it's why the faa is

working to teach dproen operators the rules to keep the skies safe. >> and a historic moment in washington today. the first time a japanese leader a addressed a joint meeting of congress. prime minister shinzo abe offered condolences for the americans killed in world war ii but he did not apologize for japan's atrocities in that war as 25 members of the house had requested. >> a lot more news still ahead. coming up what your cell phone knows about you. shocked reactions when we showed people how their smart phones are tracking exactly where they go and keeping a record including dates and times. how you can turn it off. ing and puffing... kind of like you sometimes, grandpa. well, when you have copd it can be hard to breathe. it can be hard to get air out, which can make it hard to get air in. so i talked to my doctor. she said.. doctor: symbicort could help you breathe better, starting within 5 minutes. symbicort doesn't replace a rescue inhaler

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we're back now with a consumer alert for millions of smartphone users. technology in your phone that knows exactly where you are at all times tracking everywhere you go and keeping a record of it. what you should know. >> it is the mother lode of personal information stored right on your phone for anyone to see. >> oh, my goodness. >> on the fifth you were there from 7:18. >> holy cow. >> where you live, where you work. see all those little blue dots? it even maps out where you go including the date and exact times you were there. on the iphone that personal tracker is buried deep.

go to privacy, location services systems services scroll down even more and there it is. frequent locations. tech expert says on android devices, all sent straight to google. >> it knows where i was sleeping how long i slept for, when i left when i arrived here and right now, here's where i'm sitting. >> and i can look if i have access to your account? >> any computer anywhere in the world. >> we showed this group of new moms in the park. >> i'm at home alone with my son all the time. i don't want anybody to know where i live. >> so i husband's phone and look at all the places he's been recently? >> yes. >> maybe i won't tell him how to turn it off. >> apple says they use the information to provide personalized services and it's kept solely on your device and won't be sent to apple without your consent. apple wouldn't tell us if they take the data or not. google telling us users have the ability to enable or disable location capabilities.

>> okay. so how do you shut the function off on your phone? let's take you through it step by step starting with android. from the home screen apps, then settings scroll down to privacy and safety then hit location, then right there, google location history, hit that. and then just slide it to off. on the iphone it's a little different. we're going to walk you there that as well. from the home screen, hit settlings, scroll down to privacy, location services, scroll down again, told you it's buried deep to systems services scroll down again and there it is frequent locations and slide that to off. >> by the way, there are several different models of android devices. the instructions vary slightly. here's the good news on androids and iphones, even if you shut off this particular function your other location services like maps will still work. >> thanks. you saw a lot of us

scrambling today f. you didn't catch it all, don't worry. we posted all the instructions on our facebook page. you can find it there right now. and we're back in a moment with a dramatic day of testimony in a trial that has gripped the nation. yet i'm so awake? did you know your brain has two systems? one helps keep you awake- the other helps you sleep. science suggests when you have insomnia, the wake system in your brain may be too strong and your neurotransmitters remain too active as you try to sleep, which could be leading to your insomnia. ohh...maybe that's what's preventing me from getting the sleep i need! talk to your doctor about ways to manage your insomnia. fact. advil is not only strong it's gentle on your body too. no wonder doctors and patients have trusted advil... for their tough pains for over 30 years. relief doesn't get any better than this. advil.

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in colorado today, gut-wrenching testimony in the movie theater massacre trial. james holmes accused of going on an unthinkable killing spree has pleaded not guilty by reason of insanity. today, we heard about the youngest victim. >> veronica will always be 6 years old. recently graduated from kindergarten one of many children inside theater nine that night. >> my two cousins. >> veronica's teenage cousin called 911. >> can you hear me, ma'am. >> veronica had been shot her mother ashley was also injured. >> i had my hand on

her stomach to see if she was breathing. she was so i kept telling ashley she was okay. >> panicked moviegoers sprinted out. officer michael hawkins noticed veronica almost immediately. >> i picked her out and ran her out of the front entrance of the theater. i looked down and realized she was probably gone. >> one by one, the prosecution will ask survivors and first responders to relive that night. >> i can see him with the gun pulls it up to his chest and he was pointing down to the ground looking for other people. >> the shooter, james holmes sat practically motionless in court staring straight ahead, not speaking. in video evidence a psychiatrist asks him about those who wounded. >> they're like collateral daniel i guess. >> ashley would survive, but never walk again. and her daughter, the youngest of 12 victims, gunned down during a night at the

movies. nbc news colorado. when we come back in a moment a teacher worried her harrowing ordeal would make her unrecognizable to her students and the people who helped ease her fears. caring for someone with alzheimer's means i am a lot of things. i am his sunshine. i am his advocate. so i asked about adding once-daily namenda xr to his current treatment for moderate to severe alzheimer's. it works differently. when added to another alzheimer's treatment, it may improve overall function and cognition. and may slow the worsening of symptoms for a while. vo: namenda xr doesn't change how the disease progresses. it shouldn't be taken by anyone allergic to memantine, or who's had a bad reaction to namenda xr or its ingredients. before starting treatment, tell their doctor if they have or ever had, a seizure disorder, difficulty passing urine liver, kidney or bladder problems, and about medications they're taking. certain medications, changes in diet, or medical conditions may affect the amount of namenda xr in the body and may increase side effects. the most common side effects are headache, diarrhea

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finally tonight, a story about women who find themselves in the battle of their lives and the people on a mission to give them back the confidence they need to go about their daily activities. here's nbc with tonight's making a difference. ♪ >> ms. lauren's chicago preschool class is a happy place. and 33-year-old lauren smoke pregnant with her first child wants to keep it that way. despite the fact she's been diagnosed with breast cancer. >> one of the first things i worried about is how am i going to be able to go to work and see these kids and do what i love. >> when she lost her hair to chemotherapy would they recognize her, or be frightened. when lolly toll lost her hair, her daughters noticed just

how therapeutic something as simple as a wig could be. >> it meant she could feel like her and feel beautiful and feel like the conversation was not always about her cancer. >> so when lolly passed in 2012 lolly's locks was created, to make sure women would have access to quality wigs. >> thanks to all of you for the beautiful wig you sent me. >> so far, more than 300 have been provided free of charge to women across the country. >> this could be it huh? >> yeah. >> as she prepares to start her chemo, lauren is fitted for her new her. >> that's half the battle isn't it? feeling good about yourself? >> i think so. i think if i feel good about myself then it makes me think about the bad stuff a little bit less. >> helping women to face the world and the battle with newfound confidence. nbc news chicago.

that will do it for us on this wednesday night. i'm lester holt. for all of us at nbc news, thank you for watching and good night.

lights camera access. >> face breasts, you know, all that kind of stuff. >> as we approach his final good-bye to bruce, now even more revelations